Railway signal-lamp



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RAILWAY SIGNAL LAMP.

APPLICATION FILED JUNE 21, I918- 1 350, 357. Pat nted Aug. 24, 1920.

UNITEDSTATES PATENT OFFICE.

CHARLES H. COBB, OF GREAT FALLS, MONTANA.

RAILWAY SIGNAL-LAMP.

Specification of Letters Patent. Patented All, 24, 1920.

Application filed June 21, 1918. Serial No. 241,262.

To all whom it may concern Be it known that I, CHARLns I'I. Gone, a citizen of the United States, residing at Great Falls, in the county of Cascade and State of llIontana, have invented certain new and useful Improvements in Railway Signal-Lamps; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in railway signal lamps.

An important object of this invention is to provide a lamp of the character described adapted for use in railway cars as a route indicator.

A further object of theinvention is to arovide a signaling lamp of the character described, which is adapted to project a plurality of different colored light.

Another object of the invention is to provide means for changing-the color of the several lights projected from a railway signal lamp.

Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawings forming a part of this specification and in which like numerals are employed to designate like parts throughout the same,

Figure 1 is a horizontal section through a lamp casing, showing my improved light projecting means arranged therein,

Fig. 2 is a transverse vertical section taken on line 22 of Fig. 1 in the direction of the arrows,

Fig. 3 is a vertical longitudinal section taken through va lamp casing, showing my improved light changing means arranged therein, and,

Fig. 4; is a vertical sectional view through the lamp casing, showing the light changing means arranged therein and a slightly modilied means of retaining the same in position.

In the drawings wherein for the purpose of illustration is shown the preferred embodiment of my invention, the numeral 5 generically designates a lamp casing, hav ing a bulls eye 6 arranged in the forward sides thereof. A source of light designated by the numeral 7 is arranged rearwardly of the bulls eye (3. Interposed between the bulls eye 6 and the source of light 7 is a plate 8 which may be slidably arranged within the casing as shown in Figs. 1 and 2, ormay be secured therein by screws 9 as clearly shown in Fig. Vertical flanges 10 form a guide way for the plate 8. As clearly shown in Fig. 2, the plate 8 is provided with a centrally arranged circular opening 11. An annular flange 12 clearly shown in F "ig. 8 surrounds the opening '11 and is adapted for the reception of segments of colored glass 13. A strip designated by the numeral 14 is arranged between the segments of colored glass 13 and the flange 12. Cam elements 15 are arranged on the plate 8 and are adapted to engage the segments of colored glass to secure the same in position. The elements are pivotally secured to the plate 8, by pins 16. Operating fingers 17 are formed on the end of the elements 15. It will be apparent that the segments of colored glass may be readily removed from the plate 8 by swinging the cam element 15 outwardly. A suitable opening may be arranged in the side of the casing 5 to permit of access to the segments of colored glass 13 to permit of the segments of colored glass to be changed for segments of different colors.

In practice any number of the segments may be employed each one having a different significance. As an illustration, should it be desired to convey information to a point, a

combination of the different colored segments representing the information would be placed in the opening in the plate 8.

While I have shown and described the preferred embodiment of my invention, it is understood that I may make such minor changes in arrangement and construction of parts, as will remain within spirit of the invention and the scope of the appended claims. 7

Having thus described my invention, what I claim is:

1. The combination with a lamp having a source of light and a bulls eye in one side thereof; a plate arranged in the lamp and interposed between the source of light and the bulls eye, said plate having an opening therein in alinement with the bulls eye; segments of colored glass arranged in the opening; and means to retain the segments of colored glass inthe opening.

2. In a signal, an illuminated casing having an opening in one side thereof, a plate supported in the casing and having an opening coinciding with the opening in the casing, and panes of different colors, each having a different significance adapted to be ar: ranged in the opening in the plate, and means for retaining one on more of the panes in position on the plate.

3, The combination With a railway lamp having a source of light arranged therein and a bulls eye in one side ofrthe lamp; a

plate slidably arranged Within the lamp and interposed between the source of light and the bulls eye, said plate having an opening therein and in alinement With the bulls eye;

in presence of tWo Witnesses. CHARLES H, COBB. Witnesses 2' W. M. CooKRILL, R. M. LESLIE. V 

